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Xie T, Li Y, Zhang M, Wang L, Hu Y, Yin K, Fan S, Wu H. Aggregation-induced emission activity of sensor TBM-C1 hybrid of methoxy-triphenylamine (OMe-TPA) and dicyanovinyl for cyanide detection in aqueous THF: Mechanistic insights and potential applications. SPECTROCHIMICA ACTA. PART A, MOLECULAR AND BIOMOLECULAR SPECTROSCOPY 2024; 312:124058. [PMID: 38387411 DOI: 10.1016/j.saa.2024.124058] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/22/2023] [Revised: 02/15/2024] [Accepted: 02/18/2024] [Indexed: 02/24/2024]
Abstract
A series fluorescent probes (TBM-Cx (x = 1, 4, 8)) were designed based on embedding various alkoxy chains on the electron donor of triphenylamine (TPA)-based dicyanovinyl (MT) compound with an electron-deficient benzothiadiazole (BTD) for sensitive, selective, and visualizing detection of cyanide in aqueous solution. Due to the nucleophilic addition of CN-, the intramolecular charge transfer (ICT) of these probes was inhibited by the destroyed conjugated structure, exhibiting excellent "turn-on" fluorescence response toward cyanide anion (CN-) in tetrahydrofuran (THF). However, the alkoxy chains with different lengths embedded in TPA not only enhance the sensitivity and solubility, but also regulate the emission behavior from ICT to aggregation-induced emission (AIE) characteristics. The binding mechanism and AIE sensing performances between the probes and CN- have been investigated and compared in THF/water mixture by spectral tools and theoretical calculations. The results showed that the ICT-based TBM-C1 probe with methoxy chain showed significantly turn-on fluorescence response to CN- as low as 0.077 μM in THF/water solution at high water fraction (90 %). Due to the AIE sensing process, TBM-C1 was successfully employed to determine CN- in food and water samples, image CN- in living cells and BALB/c mice, and prepare test kits for visualizing cyanide.
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Affiliation(s)
- Tian Xie
- Anhui Province Key Laboratory of Environmental Hormone and Reproduction, Anhui Province Key Laboratory for Degradation and Monitoring of Pollution of the Environment, Fuyang Normal University, Fuyang, Anhui 236037, PR China
| | - Yuanyuan Li
- Anhui Province Key Laboratory of Environmental Hormone and Reproduction, Anhui Province Key Laboratory for Degradation and Monitoring of Pollution of the Environment, Fuyang Normal University, Fuyang, Anhui 236037, PR China
| | - Mengjie Zhang
- Anhui Province Key Laboratory of Environmental Hormone and Reproduction, Anhui Province Key Laboratory for Degradation and Monitoring of Pollution of the Environment, Fuyang Normal University, Fuyang, Anhui 236037, PR China
| | - Li Wang
- Anhui Province Key Laboratory of Environmental Hormone and Reproduction, Anhui Province Key Laboratory for Degradation and Monitoring of Pollution of the Environment, Fuyang Normal University, Fuyang, Anhui 236037, PR China
| | - Yingchu Hu
- Anhui Province Key Laboratory of Environmental Hormone and Reproduction, Anhui Province Key Laboratory for Degradation and Monitoring of Pollution of the Environment, Fuyang Normal University, Fuyang, Anhui 236037, PR China
| | - Kun Yin
- Anhui Province Key Laboratory of Environmental Hormone and Reproduction, Anhui Province Key Laboratory for Degradation and Monitoring of Pollution of the Environment, Fuyang Normal University, Fuyang, Anhui 236037, PR China
| | - Suhua Fan
- Anhui Province Key Laboratory of Environmental Hormone and Reproduction, Anhui Province Key Laboratory for Degradation and Monitoring of Pollution of the Environment, Fuyang Normal University, Fuyang, Anhui 236037, PR China.
| | - Hai Wu
- Anhui Province Key Laboratory of Environmental Hormone and Reproduction, Anhui Province Key Laboratory for Degradation and Monitoring of Pollution of the Environment, Fuyang Normal University, Fuyang, Anhui 236037, PR China.
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Jia L, Fu Y, Zhang N, Liu Y, Su L, Wang H, Zhao W. Directional conjugation of Trop2 antibody to black phosphorus nanosheets for phototherapy in orthotopic gastric carcinoma. NANOMEDICINE : NANOTECHNOLOGY, BIOLOGY, AND MEDICINE 2023; 51:102687. [PMID: 37121458 DOI: 10.1016/j.nano.2023.102687] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/13/2022] [Revised: 03/29/2023] [Accepted: 04/24/2023] [Indexed: 05/02/2023]
Abstract
Tumor-associated calcium signal transducer 2 (Trop2) highly specific expression in gastric carcinoma (GC). The combination of Trop2 antibody and phototherapy agents could exhibit synergetic antitumor activity. Black phosphorus nanosheets (BP) are covalently modified with Trop2 IgG antibodies via heterobifunctional linker of polyethylene glycol (PEG). Then the Trop2 antibody was directionally conjugated to BP via Schiff base reaction between aldehyde group from oxidized Trop2 antibody and amino group of PEG. The Trop2-funcationalzied BP can significantly increase the endocytosis of BP in Trop2-positive GC cells exhibiting a reinforced antitumor activity under near infrared (NIR) irradiation. More importantly, a murine orthotopic GC model demonstrates that Trop2 antibody modification can significantly promote the accumulation of BP at tumor tissues and strengthen antitumoral activity of phototherapy. Directional conjugation of Trop2 antibody to BP facilitates the BP with superior stability, tumor targeting ability and excellent anti-tumor activity under NIR irradiation without systemic toxicity.
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Affiliation(s)
- Lizhou Jia
- Central Laboratory, Bayannur Hospital, Bayannur 015000, China
| | - Yuhao Fu
- Central Laboratory, Bayannur Hospital, Bayannur 015000, China; Basic Medical Sciences College, Inner Mongolia Medical University, Hohhot 010050, China
| | - Ning Zhang
- Central Laboratory, Bayannur Hospital, Bayannur 015000, China
| | - Yang Liu
- Central Laboratory, Bayannur Hospital, Bayannur 015000, China
| | - Lin Su
- Otolaryngology Head and Neck Surgery, Affiliated Hospital of Inner Mongolia Medical University, Hohhot 010050, China
| | - Haisheng Wang
- Basic Medical Sciences College, Inner Mongolia Medical University, Hohhot 010050, China.
| | - Wei Zhao
- Department of Pathology, Nanjing First Hospital, Nanjing Medical University, Nanjing 210012, China.
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